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Added function to get the lba of an old image file.

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This commit is contained in:
Vreixo Formoso 2008-03-03 20:42:06 +01:00
parent d894d3719b
commit c75f1a430e
2 changed files with 81 additions and 0 deletions
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29
libisofs/libisofs.h
View File

@ -2230,6 +2230,35 @@ off_t iso_file_get_size(IsoFile *file);
*/
IsoStream *iso_file_get_stream(IsoFile *file);
/**
* Get the block lba of a file node, if it was imported from an old image.
*
* @param file
* The file
* @param lba
* Will be filled with the kba
* @param flag
* Reserved for future usage, submit 0
* @return
* 1 if lba is valid (file comes from old image), 0 if file was newly
* added, i.e. it does not come from an old image, < 0 error
*
* @since 0.6.4
*/
int iso_file_get_old_image_lba(IsoFile *file, uint32_t *lba, int flag);
/*
* Like iso_file_get_old_image_lba(), but take an IsoNode.
*
* @return
* 1 if lba is valid (file comes from old image), 0 if file was newly
* added, i.e. it does not come from an old image, 2 node type has no
* LBA (no regular file), < 0 error
*
* @since 0.6.4
*/
int iso_node_get_old_image_lba(IsoNode *node, uint32_t *lba, int flag);
/**
* Add a new directory to the iso tree. Permissions, owner and hidden atts
* are taken from parent, you can modify them later.

52
libisofs/node.c
View File

@ -686,6 +686,58 @@ IsoStream *iso_file_get_stream(IsoFile *file)
return file->stream;
}
/**
* Get the block lba of a file node, if it was imported from an old image.
*
* @param file
* The file
* @param lba
* Will be filled with the kba
* @param flag
* Reserved for future usage, submit 0
* @return
* 1 if lba is valid (file comes from old image), 0 if file was newly
* added, i.e. it does not come from an old image, < 0 error
*
* @since 0.6.4
*/
int iso_file_get_old_image_lba(IsoFile *file, uint32_t *lba, int flag)
{
if (file == NULL || lba == NULL) {
return ISO_NULL_POINTER;
}
if (flag != 0) {
return ISO_WRONG_ARG_VALUE;
}
if (file->msblock != 0) {
*lba = file->msblock;
return 1;
}
return 0;
}
/*
* Like iso_file_get_old_image_lba(), but take an IsoNode.
*
* @return
* 1 if lba is valid (file comes from old image), 0 if file was newly
* added, i.e. it does not come from an old image, 2 node type has no
* LBA (no regular file), < 0 error
*
* @since 0.6.4
*/
int iso_node_get_old_image_lba(IsoNode *node, uint32_t *lba, int flag)
{
if (node == NULL) {
return ISO_NULL_POINTER;
}
if (ISO_NODE_IS_FILE(node)) {
return iso_file_get_old_image_lba((IsoFile*)node, lba, flag);
} else {
return 2;
}
}
/**
* Check if a given name is valid for an iso node.
*